kernel/drivers/staging/lustre/lnet/selftest/conrpc.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2012, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lnet/selftest/conctl.c
  37  *
  38  * Console framework rpcs
  39  *
  40  * Author: Liang Zhen <liang@whamcloud.com>
  41  */
  42
  43
  44 #include "../../include/linux/libcfs/libcfs.h"
  45 #include "../../include/linux/lnet/lib-lnet.h"
  46 #include "timer.h"
  47 #include "conrpc.h"
  48 #include "console.h"
  49
  50 void lstcon_rpc_stat_reply(lstcon_rpc_trans_t *, srpc_msg_t *,
  51                            lstcon_node_t *, lstcon_trans_stat_t *);
  52
  53 static void
  54 lstcon_rpc_done(srpc_client_rpc_t *rpc)
  55 {
  56         lstcon_rpc_t *crpc = (lstcon_rpc_t *)rpc->crpc_priv;
  57
  58         LASSERT(crpc != NULL && rpc == crpc->crp_rpc);
  59         LASSERT(crpc->crp_posted && !crpc->crp_finished);
  60
  61         spin_lock(&rpc->crpc_lock);
  62
  63         if (crpc->crp_trans == NULL) {
  64                 /* Orphan RPC is not in any transaction,
  65                  * I'm just a poor body and nobody loves me */
  66                 spin_unlock(&rpc->crpc_lock);
  67
  68                 /* release it */
  69                 lstcon_rpc_put(crpc);
  70                 return;
  71         }
  72
  73         /* not an orphan RPC */
  74         crpc->crp_finished = 1;
  75
  76         if (crpc->crp_stamp == 0) {
  77                 /* not aborted */
  78                 LASSERT(crpc->crp_status == 0);
  79
  80                 crpc->crp_stamp  = cfs_time_current();
  81                 crpc->crp_status = rpc->crpc_status;
  82         }
  83
  84         /* wakeup (transaction)thread if I'm the last RPC in the transaction */
  85         if (atomic_dec_and_test(&crpc->crp_trans->tas_remaining))
  86                 wake_up(&crpc->crp_trans->tas_waitq);
  87
  88         spin_unlock(&rpc->crpc_lock);
  89 }
  90
  91 static int
  92 lstcon_rpc_init(lstcon_node_t *nd, int service, unsigned feats,
  93                 int bulk_npg, int bulk_len, int embedded, lstcon_rpc_t *crpc)
  94 {
  95         crpc->crp_rpc = sfw_create_rpc(nd->nd_id, service,
  96                                        feats, bulk_npg, bulk_len,
  97                                        lstcon_rpc_done, (void *)crpc);
  98         if (crpc->crp_rpc == NULL)
  99                 return -ENOMEM;
 100
 101         crpc->crp_trans    = NULL;
 102         crpc->crp_node     = nd;
 103         crpc->crp_posted   = 0;
 104         crpc->crp_finished = 0;
 105         crpc->crp_unpacked = 0;
 106         crpc->crp_status   = 0;
 107         crpc->crp_stamp    = 0;
 108         crpc->crp_embedded = embedded;
 109         INIT_LIST_HEAD(&crpc->crp_link);
 110
 111         atomic_inc(&console_session.ses_rpc_counter);
 112
 113         return 0;
 114 }
 115
 116 static int
 117 lstcon_rpc_prep(lstcon_node_t *nd, int service, unsigned feats,
 118                 int bulk_npg, int bulk_len, lstcon_rpc_t **crpcpp)
 119 {
 120         lstcon_rpc_t  *crpc = NULL;
 121         int         rc;
 122
 123         spin_lock(&console_session.ses_rpc_lock);
 124
 125         if (!list_empty(&console_session.ses_rpc_freelist)) {
 126                 crpc = list_entry(console_session.ses_rpc_freelist.next,
 127                                       lstcon_rpc_t, crp_link);
 128                 list_del_init(&crpc->crp_link);
 129         }
 130
 131         spin_unlock(&console_session.ses_rpc_lock);
 132
 133         if (crpc == NULL) {
 134                 LIBCFS_ALLOC(crpc, sizeof(*crpc));
 135                 if (crpc == NULL)
 136                         return -ENOMEM;
 137         }
 138
 139         rc = lstcon_rpc_init(nd, service, feats, bulk_npg, bulk_len, 0, crpc);
 140         if (rc == 0) {
 141                 *crpcpp = crpc;
 142                 return 0;
 143         }
 144
 145         LIBCFS_FREE(crpc, sizeof(*crpc));
 146
 147         return rc;
 148 }
 149
 150 void
 151 lstcon_rpc_put(lstcon_rpc_t *crpc)
 152 {
 153         srpc_bulk_t *bulk = &crpc->crp_rpc->crpc_bulk;
 154         int       i;
 155
 156         LASSERT(list_empty(&crpc->crp_link));
 157
 158         for (i = 0; i < bulk->bk_niov; i++) {
 159                 if (bulk->bk_iovs[i].kiov_page == NULL)
 160                         continue;
 161
 162                 __free_page(bulk->bk_iovs[i].kiov_page);
 163         }
 164
 165         srpc_client_rpc_decref(crpc->crp_rpc);
 166
 167         if (crpc->crp_embedded) {
 168                 /* embedded RPC, don't recycle it */
 169                 memset(crpc, 0, sizeof(*crpc));
 170                 crpc->crp_embedded = 1;
 171
 172         } else {
 173                 spin_lock(&console_session.ses_rpc_lock);
 174
 175                 list_add(&crpc->crp_link,
 176                              &console_session.ses_rpc_freelist);
 177
 178                 spin_unlock(&console_session.ses_rpc_lock);
 179         }
 180
 181         /* RPC is not alive now */
 182         atomic_dec(&console_session.ses_rpc_counter);
 183 }
 184
 185 static void
 186 lstcon_rpc_post(lstcon_rpc_t *crpc)
 187 {
 188         lstcon_rpc_trans_t *trans = crpc->crp_trans;
 189
 190         LASSERT(trans != NULL);
 191
 192         atomic_inc(&trans->tas_remaining);
 193         crpc->crp_posted = 1;
 194
 195         sfw_post_rpc(crpc->crp_rpc);
 196 }
 197
 198 static char *
 199 lstcon_rpc_trans_name(int transop)
 200 {
 201         if (transop == LST_TRANS_SESNEW)
 202                 return "SESNEW";
 203
 204         if (transop == LST_TRANS_SESEND)
 205                 return "SESEND";
 206
 207         if (transop == LST_TRANS_SESQRY)
 208                 return "SESQRY";
 209
 210         if (transop == LST_TRANS_SESPING)
 211                 return "SESPING";
 212
 213         if (transop == LST_TRANS_TSBCLIADD)
 214                 return "TSBCLIADD";
 215
 216         if (transop == LST_TRANS_TSBSRVADD)
 217                 return "TSBSRVADD";
 218
 219         if (transop == LST_TRANS_TSBRUN)
 220                 return "TSBRUN";
 221
 222         if (transop == LST_TRANS_TSBSTOP)
 223                 return "TSBSTOP";
 224
 225         if (transop == LST_TRANS_TSBCLIQRY)
 226                 return "TSBCLIQRY";
 227
 228         if (transop == LST_TRANS_TSBSRVQRY)
 229                 return "TSBSRVQRY";
 230
 231         if (transop == LST_TRANS_STATQRY)
 232                 return "STATQRY";
 233
 234         return "Unknown";
 235 }
 236
 237 int
 238 lstcon_rpc_trans_prep(struct list_head *translist,
 239                       int transop, lstcon_rpc_trans_t **transpp)
 240 {
 241         lstcon_rpc_trans_t *trans;
 242
 243         if (translist != NULL) {
 244                 list_for_each_entry(trans, translist, tas_link) {
 245                         /* Can't enqueue two private transaction on
 246                          * the same object */
 247                         if ((trans->tas_opc & transop) == LST_TRANS_PRIVATE)
 248                                 return -EPERM;
 249                 }
 250         }
 251
 252         /* create a trans group */
 253         LIBCFS_ALLOC(trans, sizeof(*trans));
 254         if (trans == NULL)
 255                 return -ENOMEM;
 256
 257         trans->tas_opc = transop;
 258
 259         if (translist == NULL)
 260                 INIT_LIST_HEAD(&trans->tas_olink);
 261         else
 262                 list_add_tail(&trans->tas_olink, translist);
 263
 264         list_add_tail(&trans->tas_link, &console_session.ses_trans_list);
 265
 266         INIT_LIST_HEAD(&trans->tas_rpcs_list);
 267         atomic_set(&trans->tas_remaining, 0);
 268         init_waitqueue_head(&trans->tas_waitq);
 269
 270         spin_lock(&console_session.ses_rpc_lock);
 271         trans->tas_features = console_session.ses_features;
 272         spin_unlock(&console_session.ses_rpc_lock);
 273
 274         *transpp = trans;
 275         return 0;
 276 }
 277
 278 void
 279 lstcon_rpc_trans_addreq(lstcon_rpc_trans_t *trans, lstcon_rpc_t *crpc)
 280 {
 281         list_add_tail(&crpc->crp_link, &trans->tas_rpcs_list);
 282         crpc->crp_trans = trans;
 283 }
 284
 285 void
 286 lstcon_rpc_trans_abort(lstcon_rpc_trans_t *trans, int error)
 287 {
 288         srpc_client_rpc_t *rpc;
 289         lstcon_rpc_t      *crpc;
 290         lstcon_node_t     *nd;
 291
 292         list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
 293                 rpc = crpc->crp_rpc;
 294
 295                 spin_lock(&rpc->crpc_lock);
 296
 297                 if (!crpc->crp_posted || /* not posted */
 298                     crpc->crp_stamp != 0) { /* rpc done or aborted already */
 299                         if (crpc->crp_stamp == 0) {
 300                                 crpc->crp_stamp = cfs_time_current();
 301                                 crpc->crp_status = -EINTR;
 302                         }
 303                         spin_unlock(&rpc->crpc_lock);
 304                         continue;
 305                 }
 306
 307                 crpc->crp_stamp  = cfs_time_current();
 308                 crpc->crp_status = error;
 309
 310                 spin_unlock(&rpc->crpc_lock);
 311
 312                 sfw_abort_rpc(rpc);
 313
 314                 if (error != ETIMEDOUT)
 315                         continue;
 316
 317                 nd = crpc->crp_node;
 318                 if (cfs_time_after(nd->nd_stamp, crpc->crp_stamp))
 319                         continue;
 320
 321                 nd->nd_stamp = crpc->crp_stamp;
 322                 nd->nd_state = LST_NODE_DOWN;
 323         }
 324 }
 325
 326 static int
 327 lstcon_rpc_trans_check(lstcon_rpc_trans_t *trans)
 328 {
 329         if (console_session.ses_shutdown &&
 330             !list_empty(&trans->tas_olink)) /* Not an end session RPC */
 331                 return 1;
 332
 333         return (atomic_read(&trans->tas_remaining) == 0) ? 1 : 0;
 334 }
 335
 336 int
 337 lstcon_rpc_trans_postwait(lstcon_rpc_trans_t *trans, int timeout)
 338 {
 339         lstcon_rpc_t  *crpc;
 340         int         rc;
 341
 342         if (list_empty(&trans->tas_rpcs_list))
 343                 return 0;
 344
 345         if (timeout < LST_TRANS_MIN_TIMEOUT)
 346                 timeout = LST_TRANS_MIN_TIMEOUT;
 347
 348         CDEBUG(D_NET, "Transaction %s started\n",
 349                lstcon_rpc_trans_name(trans->tas_opc));
 350
 351         /* post all requests */
 352         list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
 353                 LASSERT(!crpc->crp_posted);
 354
 355                 lstcon_rpc_post(crpc);
 356         }
 357
 358         mutex_unlock(&console_session.ses_mutex);
 359
 360         rc = wait_event_interruptible_timeout(trans->tas_waitq,
 361                                               lstcon_rpc_trans_check(trans),
 362                                               cfs_time_seconds(timeout));
 363         rc = (rc > 0) ? 0 : ((rc < 0) ? -EINTR : -ETIMEDOUT);
 364
 365         mutex_lock(&console_session.ses_mutex);
 366
 367         if (console_session.ses_shutdown)
 368                 rc = -ESHUTDOWN;
 369
 370         if (rc != 0 || atomic_read(&trans->tas_remaining) != 0) {
 371                 /* treat short timeout as canceled */
 372                 if (rc == -ETIMEDOUT && timeout < LST_TRANS_MIN_TIMEOUT * 2)
 373                         rc = -EINTR;
 374
 375                 lstcon_rpc_trans_abort(trans, rc);
 376         }
 377
 378         CDEBUG(D_NET, "Transaction %s stopped: %d\n",
 379                lstcon_rpc_trans_name(trans->tas_opc), rc);
 380
 381         lstcon_rpc_trans_stat(trans, lstcon_trans_stat());
 382
 383         return rc;
 384 }
 385
 386 static int
 387 lstcon_rpc_get_reply(lstcon_rpc_t *crpc, srpc_msg_t **msgpp)
 388 {
 389         lstcon_node_t   *nd  = crpc->crp_node;
 390         srpc_client_rpc_t    *rpc = crpc->crp_rpc;
 391         srpc_generic_reply_t *rep;
 392
 393         LASSERT(nd != NULL && rpc != NULL);
 394         LASSERT(crpc->crp_stamp != 0);
 395
 396         if (crpc->crp_status != 0) {
 397                 *msgpp = NULL;
 398                 return crpc->crp_status;
 399         }
 400
 401         *msgpp = &rpc->crpc_replymsg;
 402         if (!crpc->crp_unpacked) {
 403                 sfw_unpack_message(*msgpp);
 404                 crpc->crp_unpacked = 1;
 405         }
 406
 407         if (cfs_time_after(nd->nd_stamp, crpc->crp_stamp))
 408                 return 0;
 409
 410         nd->nd_stamp = crpc->crp_stamp;
 411         rep = &(*msgpp)->msg_body.reply;
 412
 413         if (rep->sid.ses_nid == LNET_NID_ANY)
 414                 nd->nd_state = LST_NODE_UNKNOWN;
 415         else if (lstcon_session_match(rep->sid))
 416                 nd->nd_state = LST_NODE_ACTIVE;
 417         else
 418                 nd->nd_state = LST_NODE_BUSY;
 419
 420         return 0;
 421 }
 422
 423 void
 424 lstcon_rpc_trans_stat(lstcon_rpc_trans_t *trans, lstcon_trans_stat_t *stat)
 425 {
 426         lstcon_rpc_t      *crpc;
 427         srpc_msg_t      *rep;
 428         int             error;
 429
 430         LASSERT(stat != NULL);
 431
 432         memset(stat, 0, sizeof(*stat));
 433
 434         list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
 435                 lstcon_rpc_stat_total(stat, 1);
 436
 437                 LASSERT(crpc->crp_stamp != 0);
 438
 439                 error = lstcon_rpc_get_reply(crpc, &rep);
 440                 if (error != 0) {
 441                         lstcon_rpc_stat_failure(stat, 1);
 442                         if (stat->trs_rpc_errno == 0)
 443                                 stat->trs_rpc_errno = -error;
 444
 445                         continue;
 446                 }
 447
 448                 lstcon_rpc_stat_success(stat, 1);
 449
 450                 lstcon_rpc_stat_reply(trans, rep, crpc->crp_node, stat);
 451         }
 452
 453         if (trans->tas_opc == LST_TRANS_SESNEW && stat->trs_fwk_errno == 0) {
 454                 stat->trs_fwk_errno =
 455                       lstcon_session_feats_check(trans->tas_features);
 456         }
 457
 458         CDEBUG(D_NET, "transaction %s : success %d, failure %d, total %d, RPC error(%d), Framework error(%d)\n",
 459                lstcon_rpc_trans_name(trans->tas_opc),
 460                lstcon_rpc_stat_success(stat, 0),
 461                lstcon_rpc_stat_failure(stat, 0),
 462                lstcon_rpc_stat_total(stat, 0),
 463                stat->trs_rpc_errno, stat->trs_fwk_errno);
 464
 465         return;
 466 }
 467
 468 int
 469 lstcon_rpc_trans_interpreter(lstcon_rpc_trans_t *trans,
 470                              struct list_head *head_up,
 471                              lstcon_rpc_readent_func_t readent)
 472 {
 473         struct list_head            tmp;
 474         struct list_head           *next;
 475         lstcon_rpc_ent_t     *ent;
 476         srpc_generic_reply_t *rep;
 477         lstcon_rpc_t     *crpc;
 478         srpc_msg_t         *msg;
 479         lstcon_node_t   *nd;
 480         long    dur;
 481         struct timeval  tv;
 482         int                error;
 483
 484         LASSERT(head_up != NULL);
 485
 486         next = head_up;
 487
 488         list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
 489                 if (copy_from_user(&tmp, next,
 490                                        sizeof(struct list_head)))
 491                         return -EFAULT;
 492
 493                 if (tmp.next == head_up)
 494                         return 0;
 495
 496                 next = tmp.next;
 497
 498                 ent = list_entry(next, lstcon_rpc_ent_t, rpe_link);
 499
 500                 LASSERT(crpc->crp_stamp != 0);
 501
 502                 error = lstcon_rpc_get_reply(crpc, &msg);
 503
 504                 nd = crpc->crp_node;
 505
 506                 dur = (long)cfs_time_sub(crpc->crp_stamp,
 507                       (unsigned long)console_session.ses_id.ses_stamp);
 508                 cfs_duration_usec(dur, &tv);
 509
 510                 if (copy_to_user(&ent->rpe_peer,
 511                                      &nd->nd_id, sizeof(lnet_process_id_t)) ||
 512                     copy_to_user(&ent->rpe_stamp, &tv, sizeof(tv)) ||
 513                     copy_to_user(&ent->rpe_state,
 514                                      &nd->nd_state, sizeof(nd->nd_state)) ||
 515                     copy_to_user(&ent->rpe_rpc_errno, &error,
 516                                      sizeof(error)))
 517                         return -EFAULT;
 518
 519                 if (error != 0)
 520                         continue;
 521
 522                 /* RPC is done */
 523                 rep = (srpc_generic_reply_t *)&msg->msg_body.reply;
 524
 525                 if (copy_to_user(&ent->rpe_sid,
 526                                      &rep->sid, sizeof(lst_sid_t)) ||
 527                     copy_to_user(&ent->rpe_fwk_errno,
 528                                      &rep->status, sizeof(rep->status)))
 529                         return -EFAULT;
 530
 531                 if (readent == NULL)
 532                         continue;
 533
 534                 error = readent(trans->tas_opc, msg, ent);
 535
 536                 if (error != 0)
 537                         return error;
 538         }
 539
 540         return 0;
 541 }
 542
 543 void
 544 lstcon_rpc_trans_destroy(lstcon_rpc_trans_t *trans)
 545 {
 546         srpc_client_rpc_t *rpc;
 547         lstcon_rpc_t      *crpc;
 548         lstcon_rpc_t      *tmp;
 549         int             count = 0;
 550
 551         list_for_each_entry_safe(crpc, tmp, &trans->tas_rpcs_list,
 552                                  crp_link) {
 553                 rpc = crpc->crp_rpc;
 554
 555                 spin_lock(&rpc->crpc_lock);
 556
 557                 /* free it if not posted or finished already */
 558                 if (!crpc->crp_posted || crpc->crp_finished) {
 559                         spin_unlock(&rpc->crpc_lock);
 560
 561                         list_del_init(&crpc->crp_link);
 562                         lstcon_rpc_put(crpc);
 563
 564                         continue;
 565                 }
 566
 567                 /* rpcs can be still not callbacked (even LNetMDUnlink is called)
 568                  * because huge timeout for inaccessible network, don't make
 569                  * user wait for them, just abandon them, they will be recycled
 570                  * in callback */
 571
 572                 LASSERT(crpc->crp_status != 0);
 573
 574                 crpc->crp_node  = NULL;
 575                 crpc->crp_trans = NULL;
 576                 list_del_init(&crpc->crp_link);
 577                 count++;
 578
 579                 spin_unlock(&rpc->crpc_lock);
 580
 581                 atomic_dec(&trans->tas_remaining);
 582         }
 583
 584         LASSERT(atomic_read(&trans->tas_remaining) == 0);
 585
 586         list_del(&trans->tas_link);
 587         if (!list_empty(&trans->tas_olink))
 588                 list_del(&trans->tas_olink);
 589
 590         CDEBUG(D_NET, "Transaction %s destroyed with %d pending RPCs\n",
 591                lstcon_rpc_trans_name(trans->tas_opc), count);
 592
 593         LIBCFS_FREE(trans, sizeof(*trans));
 594
 595         return;
 596 }
 597
 598 int
 599 lstcon_sesrpc_prep(lstcon_node_t *nd, int transop,
 600                    unsigned feats, lstcon_rpc_t **crpc)
 601 {
 602         srpc_mksn_reqst_t *msrq;
 603         srpc_rmsn_reqst_t *rsrq;
 604         int             rc;
 605
 606         switch (transop) {
 607         case LST_TRANS_SESNEW:
 608                 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_MAKE_SESSION,
 609                                      feats, 0, 0, crpc);
 610                 if (rc != 0)
 611                         return rc;
 612
 613                 msrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.mksn_reqst;
 614                 msrq->mksn_sid     = console_session.ses_id;
 615                 msrq->mksn_force   = console_session.ses_force;
 616                 strncpy(msrq->mksn_name, console_session.ses_name,
 617                         strlen(console_session.ses_name));
 618                 break;
 619
 620         case LST_TRANS_SESEND:
 621                 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_REMOVE_SESSION,
 622                                      feats, 0, 0, crpc);
 623                 if (rc != 0)
 624                         return rc;
 625
 626                 rsrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.rmsn_reqst;
 627                 rsrq->rmsn_sid = console_session.ses_id;
 628                 break;
 629
 630         default:
 631                 LBUG();
 632         }
 633
 634         return 0;
 635 }
 636
 637 int
 638 lstcon_dbgrpc_prep(lstcon_node_t *nd, unsigned feats, lstcon_rpc_t **crpc)
 639 {
 640         srpc_debug_reqst_t *drq;
 641         int                 rc;
 642
 643         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_DEBUG, feats, 0, 0, crpc);
 644         if (rc != 0)
 645                 return rc;
 646
 647         drq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.dbg_reqst;
 648
 649         drq->dbg_sid   = console_session.ses_id;
 650         drq->dbg_flags = 0;
 651
 652         return rc;
 653 }
 654
 655 int
 656 lstcon_batrpc_prep(lstcon_node_t *nd, int transop, unsigned feats,
 657                    lstcon_tsb_hdr_t *tsb, lstcon_rpc_t **crpc)
 658 {
 659         lstcon_batch_t     *batch;
 660         srpc_batch_reqst_t *brq;
 661         int                 rc;
 662
 663         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_BATCH, feats, 0, 0, crpc);
 664         if (rc != 0)
 665                 return rc;
 666
 667         brq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.bat_reqst;
 668
 669         brq->bar_sid     = console_session.ses_id;
 670         brq->bar_bid     = tsb->tsb_id;
 671         brq->bar_testidx = tsb->tsb_index;
 672         brq->bar_opc     = transop == LST_TRANS_TSBRUN ? SRPC_BATCH_OPC_RUN :
 673                            (transop == LST_TRANS_TSBSTOP ? SRPC_BATCH_OPC_STOP :
 674                             SRPC_BATCH_OPC_QUERY);
 675
 676         if (transop != LST_TRANS_TSBRUN &&
 677             transop != LST_TRANS_TSBSTOP)
 678                 return 0;
 679
 680         LASSERT(tsb->tsb_index == 0);
 681
 682         batch = (lstcon_batch_t *)tsb;
 683         brq->bar_arg = batch->bat_arg;
 684
 685         return 0;
 686 }
 687
 688 int
 689 lstcon_statrpc_prep(lstcon_node_t *nd, unsigned feats, lstcon_rpc_t **crpc)
 690 {
 691         srpc_stat_reqst_t *srq;
 692         int                rc;
 693
 694         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_QUERY_STAT, feats, 0, 0, crpc);
 695         if (rc != 0)
 696                 return rc;
 697
 698         srq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.stat_reqst;
 699
 700         srq->str_sid  = console_session.ses_id;
 701         srq->str_type = 0; /* XXX remove it */
 702
 703         return 0;
 704 }
 705
 706 static lnet_process_id_packed_t *
 707 lstcon_next_id(int idx, int nkiov, lnet_kiov_t *kiov)
 708 {
 709         lnet_process_id_packed_t *pid;
 710         int                    i;
 711
 712         i = idx / SFW_ID_PER_PAGE;
 713
 714         LASSERT(i < nkiov);
 715
 716         pid = (lnet_process_id_packed_t *)page_address(kiov[i].kiov_page);
 717
 718         return &pid[idx % SFW_ID_PER_PAGE];
 719 }
 720
 721 static int
 722 lstcon_dstnodes_prep(lstcon_group_t *grp, int idx,
 723                      int dist, int span, int nkiov, lnet_kiov_t *kiov)
 724 {
 725         lnet_process_id_packed_t *pid;
 726         lstcon_ndlink_t   *ndl;
 727         lstcon_node_t       *nd;
 728         int                    start;
 729         int                    end;
 730         int                    i = 0;
 731
 732         LASSERT(dist >= 1);
 733         LASSERT(span >= 1);
 734         LASSERT(grp->grp_nnode >= 1);
 735
 736         if (span > grp->grp_nnode)
 737                 return -EINVAL;
 738
 739         start = ((idx / dist) * span) % grp->grp_nnode;
 740         end   = ((idx / dist) * span + span - 1) % grp->grp_nnode;
 741
 742         list_for_each_entry(ndl, &grp->grp_ndl_list, ndl_link) {
 743                 nd = ndl->ndl_node;
 744                 if (i < start) {
 745                         i++;
 746                         continue;
 747                 }
 748
 749                 if (i > (end >= start ? end : grp->grp_nnode))
 750                         break;
 751
 752                 pid = lstcon_next_id((i - start), nkiov, kiov);
 753                 pid->nid = nd->nd_id.nid;
 754                 pid->pid = nd->nd_id.pid;
 755                 i++;
 756         }
 757
 758         if (start <= end) /* done */
 759                 return 0;
 760
 761         list_for_each_entry(ndl, &grp->grp_ndl_list, ndl_link) {
 762                 if (i > grp->grp_nnode + end)
 763                         break;
 764
 765                 nd = ndl->ndl_node;
 766                 pid = lstcon_next_id((i - start), nkiov, kiov);
 767                 pid->nid = nd->nd_id.nid;
 768                 pid->pid = nd->nd_id.pid;
 769                 i++;
 770         }
 771
 772         return 0;
 773 }
 774
 775 static int
 776 lstcon_pingrpc_prep(lst_test_ping_param_t *param, srpc_test_reqst_t *req)
 777 {
 778         test_ping_req_t *prq = &req->tsr_u.ping;
 779
 780         prq->png_size   = param->png_size;
 781         prq->png_flags  = param->png_flags;
 782         /* TODO dest */
 783         return 0;
 784 }
 785
 786 static int
 787 lstcon_bulkrpc_v0_prep(lst_test_bulk_param_t *param, srpc_test_reqst_t *req)
 788 {
 789         test_bulk_req_t *brq = &req->tsr_u.bulk_v0;
 790
 791         brq->blk_opc    = param->blk_opc;
 792         brq->blk_npg    = (param->blk_size + PAGE_CACHE_SIZE - 1) / PAGE_CACHE_SIZE;
 793         brq->blk_flags  = param->blk_flags;
 794
 795         return 0;
 796 }
 797
 798 static int
 799 lstcon_bulkrpc_v1_prep(lst_test_bulk_param_t *param, srpc_test_reqst_t *req)
 800 {
 801         test_bulk_req_v1_t *brq = &req->tsr_u.bulk_v1;
 802
 803         brq->blk_opc    = param->blk_opc;
 804         brq->blk_flags  = param->blk_flags;
 805         brq->blk_len    = param->blk_size;
 806         brq->blk_offset = 0; /* reserved */
 807
 808         return 0;
 809 }
 810
 811 int
 812 lstcon_testrpc_prep(lstcon_node_t *nd, int transop, unsigned feats,
 813                     lstcon_test_t *test, lstcon_rpc_t **crpc)
 814 {
 815         lstcon_group_t    *sgrp = test->tes_src_grp;
 816         lstcon_group_t    *dgrp = test->tes_dst_grp;
 817         srpc_test_reqst_t *trq;
 818         srpc_bulk_t       *bulk;
 819         int             i;
 820         int                npg = 0;
 821         int                nob = 0;
 822         int                rc  = 0;
 823
 824         if (transop == LST_TRANS_TSBCLIADD) {
 825                 npg = sfw_id_pages(test->tes_span);
 826                 nob = (feats & LST_FEAT_BULK_LEN) == 0 ?
 827                       npg * PAGE_CACHE_SIZE :
 828                       sizeof(lnet_process_id_packed_t) * test->tes_span;
 829         }
 830
 831         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_TEST, feats, npg, nob, crpc);
 832         if (rc != 0)
 833                 return rc;
 834
 835         trq  = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.tes_reqst;
 836
 837         if (transop == LST_TRANS_TSBSRVADD) {
 838                 int ndist = (sgrp->grp_nnode + test->tes_dist - 1) / test->tes_dist;
 839                 int nspan = (dgrp->grp_nnode + test->tes_span - 1) / test->tes_span;
 840                 int nmax = (ndist + nspan - 1) / nspan;
 841
 842                 trq->tsr_ndest = 0;
 843                 trq->tsr_loop  = nmax * test->tes_dist * test->tes_concur;
 844
 845         } else {
 846                 bulk = &(*crpc)->crp_rpc->crpc_bulk;
 847
 848                 for (i = 0; i < npg; i++) {
 849                         int     len;
 850
 851                         LASSERT(nob > 0);
 852
 853                         len = (feats & LST_FEAT_BULK_LEN) == 0 ?
 854                               PAGE_CACHE_SIZE : min_t(int, nob, PAGE_CACHE_SIZE);
 855                         nob -= len;
 856
 857                         bulk->bk_iovs[i].kiov_offset = 0;
 858                         bulk->bk_iovs[i].kiov_len    = len;
 859                         bulk->bk_iovs[i].kiov_page   =
 860                                 alloc_page(GFP_IOFS);
 861
 862                         if (bulk->bk_iovs[i].kiov_page == NULL) {
 863                                 lstcon_rpc_put(*crpc);
 864                                 return -ENOMEM;
 865                         }
 866                 }
 867
 868                 bulk->bk_sink = 0;
 869
 870                 LASSERT(transop == LST_TRANS_TSBCLIADD);
 871
 872                 rc = lstcon_dstnodes_prep(test->tes_dst_grp,
 873                                           test->tes_cliidx++,
 874                                           test->tes_dist,
 875                                           test->tes_span,
 876                                           npg, &bulk->bk_iovs[0]);
 877                 if (rc != 0) {
 878                         lstcon_rpc_put(*crpc);
 879                         return rc;
 880                 }
 881
 882                 trq->tsr_ndest = test->tes_span;
 883                 trq->tsr_loop  = test->tes_loop;
 884         }
 885
 886         trq->tsr_sid    = console_session.ses_id;
 887         trq->tsr_bid    = test->tes_hdr.tsb_id;
 888         trq->tsr_concur     = test->tes_concur;
 889         trq->tsr_is_client  = (transop == LST_TRANS_TSBCLIADD) ? 1 : 0;
 890         trq->tsr_stop_onerr = !!test->tes_stop_onerr;
 891
 892         switch (test->tes_type) {
 893         case LST_TEST_PING:
 894                 trq->tsr_service = SRPC_SERVICE_PING;
 895                 rc = lstcon_pingrpc_prep((lst_test_ping_param_t *)
 896                                          &test->tes_param[0], trq);
 897                 break;
 898
 899         case LST_TEST_BULK:
 900                 trq->tsr_service = SRPC_SERVICE_BRW;
 901                 if ((feats & LST_FEAT_BULK_LEN) == 0) {
 902                         rc = lstcon_bulkrpc_v0_prep((lst_test_bulk_param_t *)
 903                                                     &test->tes_param[0], trq);
 904                 } else {
 905                         rc = lstcon_bulkrpc_v1_prep((lst_test_bulk_param_t *)
 906                                                     &test->tes_param[0], trq);
 907                 }
 908
 909                 break;
 910         default:
 911                 LBUG();
 912                 break;
 913         }
 914
 915         return rc;
 916 }
 917
 918 static int
 919 lstcon_sesnew_stat_reply(lstcon_rpc_trans_t *trans,
 920                          lstcon_node_t *nd, srpc_msg_t *reply)
 921 {
 922         srpc_mksn_reply_t *mksn_rep = &reply->msg_body.mksn_reply;
 923         int                status   = mksn_rep->mksn_status;
 924
 925         if (status == 0 &&
 926             (reply->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
 927                 mksn_rep->mksn_status = EPROTO;
 928                 status = EPROTO;
 929         }
 930
 931         if (status == EPROTO) {
 932                 CNETERR("session protocol error from %s: %u\n",
 933                         libcfs_nid2str(nd->nd_id.nid),
 934                         reply->msg_ses_feats);
 935         }
 936
 937         if (status != 0)
 938                 return status;
 939
 940         if (!trans->tas_feats_updated) {
 941                 trans->tas_feats_updated = 1;
 942                 trans->tas_features = reply->msg_ses_feats;
 943         }
 944
 945         if (reply->msg_ses_feats != trans->tas_features) {
 946                 CNETERR("Framework features %x from %s is different with features on this transaction: %x\n",
 947                          reply->msg_ses_feats, libcfs_nid2str(nd->nd_id.nid),
 948                          trans->tas_features);
 949                 status = mksn_rep->mksn_status = EPROTO;
 950         }
 951
 952         if (status == 0) {
 953                 /* session timeout on remote node */
 954                 nd->nd_timeout = mksn_rep->mksn_timeout;
 955         }
 956
 957         return status;
 958 }
 959
 960 void
 961 lstcon_rpc_stat_reply(lstcon_rpc_trans_t *trans, srpc_msg_t *msg,
 962                       lstcon_node_t *nd, lstcon_trans_stat_t *stat)
 963 {
 964         srpc_rmsn_reply_t  *rmsn_rep;
 965         srpc_debug_reply_t *dbg_rep;
 966         srpc_batch_reply_t *bat_rep;
 967         srpc_test_reply_t  *test_rep;
 968         srpc_stat_reply_t  *stat_rep;
 969         int              rc = 0;
 970
 971         switch (trans->tas_opc) {
 972         case LST_TRANS_SESNEW:
 973                 rc = lstcon_sesnew_stat_reply(trans, nd, msg);
 974                 if (rc == 0) {
 975                         lstcon_sesop_stat_success(stat, 1);
 976                         return;
 977                 }
 978
 979                 lstcon_sesop_stat_failure(stat, 1);
 980                 break;
 981
 982         case LST_TRANS_SESEND:
 983                 rmsn_rep = &msg->msg_body.rmsn_reply;
 984                 /* ESRCH is not an error for end session */
 985                 if (rmsn_rep->rmsn_status == 0 ||
 986                     rmsn_rep->rmsn_status == ESRCH) {
 987                         lstcon_sesop_stat_success(stat, 1);
 988                         return;
 989                 }
 990
 991                 lstcon_sesop_stat_failure(stat, 1);
 992                 rc = rmsn_rep->rmsn_status;
 993                 break;
 994
 995         case LST_TRANS_SESQRY:
 996         case LST_TRANS_SESPING:
 997                 dbg_rep = &msg->msg_body.dbg_reply;
 998
 999                 if (dbg_rep->dbg_status == ESRCH) {
1000                         lstcon_sesqry_stat_unknown(stat, 1);
1001                         return;
1002                 }
1003
1004                 if (lstcon_session_match(dbg_rep->dbg_sid))
1005                         lstcon_sesqry_stat_active(stat, 1);
1006                 else
1007                         lstcon_sesqry_stat_busy(stat, 1);
1008                 return;
1009
1010         case LST_TRANS_TSBRUN:
1011         case LST_TRANS_TSBSTOP:
1012                 bat_rep = &msg->msg_body.bat_reply;
1013
1014                 if (bat_rep->bar_status == 0) {
1015                         lstcon_tsbop_stat_success(stat, 1);
1016                         return;
1017                 }
1018
1019                 if (bat_rep->bar_status == EPERM &&
1020                     trans->tas_opc == LST_TRANS_TSBSTOP) {
1021                         lstcon_tsbop_stat_success(stat, 1);
1022                         return;
1023                 }
1024
1025                 lstcon_tsbop_stat_failure(stat, 1);
1026                 rc = bat_rep->bar_status;
1027                 break;
1028
1029         case LST_TRANS_TSBCLIQRY:
1030         case LST_TRANS_TSBSRVQRY:
1031                 bat_rep = &msg->msg_body.bat_reply;
1032
1033                 if (bat_rep->bar_active != 0)
1034                         lstcon_tsbqry_stat_run(stat, 1);
1035                 else
1036                         lstcon_tsbqry_stat_idle(stat, 1);
1037
1038                 if (bat_rep->bar_status == 0)
1039                         return;
1040
1041                 lstcon_tsbqry_stat_failure(stat, 1);
1042                 rc = bat_rep->bar_status;
1043                 break;
1044
1045         case LST_TRANS_TSBCLIADD:
1046         case LST_TRANS_TSBSRVADD:
1047                 test_rep = &msg->msg_body.tes_reply;
1048
1049                 if (test_rep->tsr_status == 0) {
1050                         lstcon_tsbop_stat_success(stat, 1);
1051                         return;
1052                 }
1053
1054                 lstcon_tsbop_stat_failure(stat, 1);
1055                 rc = test_rep->tsr_status;
1056                 break;
1057
1058         case LST_TRANS_STATQRY:
1059                 stat_rep = &msg->msg_body.stat_reply;
1060
1061                 if (stat_rep->str_status == 0) {
1062                         lstcon_statqry_stat_success(stat, 1);
1063                         return;
1064                 }
1065
1066                 lstcon_statqry_stat_failure(stat, 1);
1067                 rc = stat_rep->str_status;
1068                 break;
1069
1070         default:
1071                 LBUG();
1072         }
1073
1074         if (stat->trs_fwk_errno == 0)
1075                 stat->trs_fwk_errno = rc;
1076
1077         return;
1078 }
1079
1080 int
1081 lstcon_rpc_trans_ndlist(struct list_head *ndlist,
1082                         struct list_head *translist, int transop,
1083                         void *arg, lstcon_rpc_cond_func_t condition,
1084                         lstcon_rpc_trans_t **transpp)
1085 {
1086         lstcon_rpc_trans_t *trans;
1087         lstcon_ndlink_t    *ndl;
1088         lstcon_node_t      *nd;
1089         lstcon_rpc_t       *rpc;
1090         unsigned            feats;
1091         int              rc;
1092
1093         /* Creating session RPG for list of nodes */
1094
1095         rc = lstcon_rpc_trans_prep(translist, transop, &trans);
1096         if (rc != 0) {
1097                 CERROR("Can't create transaction %d: %d\n", transop, rc);
1098                 return rc;
1099         }
1100
1101         feats = trans->tas_features;
1102         list_for_each_entry(ndl, ndlist, ndl_link) {
1103                 rc = condition == NULL ? 1 :
1104                      condition(transop, ndl->ndl_node, arg);
1105
1106                 if (rc == 0)
1107                         continue;
1108
1109                 if (rc < 0) {
1110                         CDEBUG(D_NET, "Condition error while creating RPC for transaction %d: %d\n",
1111                                         transop, rc);
1112                         break;
1113                 }
1114
1115                 nd = ndl->ndl_node;
1116
1117                 switch (transop) {
1118                 case LST_TRANS_SESNEW:
1119                 case LST_TRANS_SESEND:
1120                         rc = lstcon_sesrpc_prep(nd, transop, feats, &rpc);
1121                         break;
1122                 case LST_TRANS_SESQRY:
1123                 case LST_TRANS_SESPING:
1124                         rc = lstcon_dbgrpc_prep(nd, feats, &rpc);
1125                         break;
1126                 case LST_TRANS_TSBCLIADD:
1127                 case LST_TRANS_TSBSRVADD:
1128                         rc = lstcon_testrpc_prep(nd, transop, feats,
1129                                                  (lstcon_test_t *)arg, &rpc);
1130                         break;
1131                 case LST_TRANS_TSBRUN:
1132                 case LST_TRANS_TSBSTOP:
1133                 case LST_TRANS_TSBCLIQRY:
1134                 case LST_TRANS_TSBSRVQRY:
1135                         rc = lstcon_batrpc_prep(nd, transop, feats,
1136                                                 (lstcon_tsb_hdr_t *)arg, &rpc);
1137                         break;
1138                 case LST_TRANS_STATQRY:
1139                         rc = lstcon_statrpc_prep(nd, feats, &rpc);
1140                         break;
1141                 default:
1142                         rc = -EINVAL;
1143                         break;
1144                 }
1145
1146                 if (rc != 0) {
1147                         CERROR("Failed to create RPC for transaction %s: %d\n",
1148                                lstcon_rpc_trans_name(transop), rc);
1149                         break;
1150                 }
1151
1152                 lstcon_rpc_trans_addreq(trans, rpc);
1153         }
1154
1155         if (rc == 0) {
1156                 *transpp = trans;
1157                 return 0;
1158         }
1159
1160         lstcon_rpc_trans_destroy(trans);
1161
1162         return rc;
1163 }
1164
1165 static void
1166 lstcon_rpc_pinger(void *arg)
1167 {
1168         stt_timer_t     *ptimer = (stt_timer_t *)arg;
1169         lstcon_rpc_trans_t *trans;
1170         lstcon_rpc_t       *crpc;
1171         srpc_msg_t       *rep;
1172         srpc_debug_reqst_t *drq;
1173         lstcon_ndlink_t    *ndl;
1174         lstcon_node_t      *nd;
1175         time_t        intv;
1176         int              count = 0;
1177         int              rc;
1178
1179         /* RPC pinger is a special case of transaction,
1180          * it's called by timer at 8 seconds interval.
1181          */
1182         mutex_lock(&console_session.ses_mutex);
1183
1184         if (console_session.ses_shutdown || console_session.ses_expired) {
1185                 mutex_unlock(&console_session.ses_mutex);
1186                 return;
1187         }
1188
1189         if (!console_session.ses_expired &&
1190             get_seconds() - console_session.ses_laststamp >
1191             (time_t)console_session.ses_timeout)
1192                 console_session.ses_expired = 1;
1193
1194         trans = console_session.ses_ping;
1195
1196         LASSERT(trans != NULL);
1197
1198         list_for_each_entry(ndl, &console_session.ses_ndl_list, ndl_link) {
1199                 nd = ndl->ndl_node;
1200
1201                 if (console_session.ses_expired) {
1202                         /* idle console, end session on all nodes */
1203                         if (nd->nd_state != LST_NODE_ACTIVE)
1204                                 continue;
1205
1206                         rc = lstcon_sesrpc_prep(nd, LST_TRANS_SESEND,
1207                                                 trans->tas_features, &crpc);
1208                         if (rc != 0) {
1209                                 CERROR("Out of memory\n");
1210                                 break;
1211                         }
1212
1213                         lstcon_rpc_trans_addreq(trans, crpc);
1214                         lstcon_rpc_post(crpc);
1215
1216                         continue;
1217                 }
1218
1219                 crpc = &nd->nd_ping;
1220
1221                 if (crpc->crp_rpc != NULL) {
1222                         LASSERT(crpc->crp_trans == trans);
1223                         LASSERT(!list_empty(&crpc->crp_link));
1224
1225                         spin_lock(&crpc->crp_rpc->crpc_lock);
1226
1227                         LASSERT(crpc->crp_posted);
1228
1229                         if (!crpc->crp_finished) {
1230                                 /* in flight */
1231                                 spin_unlock(&crpc->crp_rpc->crpc_lock);
1232                                 continue;
1233                         }
1234
1235                         spin_unlock(&crpc->crp_rpc->crpc_lock);
1236
1237                         lstcon_rpc_get_reply(crpc, &rep);
1238
1239                         list_del_init(&crpc->crp_link);
1240
1241                         lstcon_rpc_put(crpc);
1242                 }
1243
1244                 if (nd->nd_state != LST_NODE_ACTIVE)
1245                         continue;
1246
1247                 intv = cfs_duration_sec(cfs_time_sub(cfs_time_current(),
1248                                                      nd->nd_stamp));
1249                 if (intv < (time_t)nd->nd_timeout / 2)
1250                         continue;
1251
1252                 rc = lstcon_rpc_init(nd, SRPC_SERVICE_DEBUG,
1253                                      trans->tas_features, 0, 0, 1, crpc);
1254                 if (rc != 0) {
1255                         CERROR("Out of memory\n");
1256                         break;
1257                 }
1258
1259                 drq = &crpc->crp_rpc->crpc_reqstmsg.msg_body.dbg_reqst;
1260
1261                 drq->dbg_sid   = console_session.ses_id;
1262                 drq->dbg_flags = 0;
1263
1264                 lstcon_rpc_trans_addreq(trans, crpc);
1265                 lstcon_rpc_post(crpc);
1266
1267                 count++;
1268         }
1269
1270         if (console_session.ses_expired) {
1271                 mutex_unlock(&console_session.ses_mutex);
1272                 return;
1273         }
1274
1275         CDEBUG(D_NET, "Ping %d nodes in session\n", count);
1276
1277         ptimer->stt_expires = (unsigned long)(get_seconds() + LST_PING_INTERVAL);
1278         stt_add_timer(ptimer);
1279
1280         mutex_unlock(&console_session.ses_mutex);
1281 }
1282
1283 int
1284 lstcon_rpc_pinger_start(void)
1285 {
1286         stt_timer_t    *ptimer;
1287         int          rc;
1288
1289         LASSERT(list_empty(&console_session.ses_rpc_freelist));
1290         LASSERT(atomic_read(&console_session.ses_rpc_counter) == 0);
1291
1292         rc = lstcon_rpc_trans_prep(NULL, LST_TRANS_SESPING,
1293                                    &console_session.ses_ping);
1294         if (rc != 0) {
1295                 CERROR("Failed to create console pinger\n");
1296                 return rc;
1297         }
1298
1299         ptimer = &console_session.ses_ping_timer;
1300         ptimer->stt_expires = (unsigned long)(get_seconds() + LST_PING_INTERVAL);
1301
1302         stt_add_timer(ptimer);
1303
1304         return 0;
1305 }
1306
1307 void
1308 lstcon_rpc_pinger_stop(void)
1309 {
1310         LASSERT(console_session.ses_shutdown);
1311
1312         stt_del_timer(&console_session.ses_ping_timer);
1313
1314         lstcon_rpc_trans_abort(console_session.ses_ping, -ESHUTDOWN);
1315         lstcon_rpc_trans_stat(console_session.ses_ping, lstcon_trans_stat());
1316         lstcon_rpc_trans_destroy(console_session.ses_ping);
1317
1318         memset(lstcon_trans_stat(), 0, sizeof(lstcon_trans_stat_t));
1319
1320         console_session.ses_ping = NULL;
1321 }
1322
1323 void
1324 lstcon_rpc_cleanup_wait(void)
1325 {
1326         lstcon_rpc_trans_t *trans;
1327         lstcon_rpc_t       *crpc;
1328         struct list_head         *pacer;
1329         struct list_head          zlist;
1330
1331         /* Called with hold of global mutex */
1332
1333         LASSERT(console_session.ses_shutdown);
1334
1335         while (!list_empty(&console_session.ses_trans_list)) {
1336                 list_for_each(pacer, &console_session.ses_trans_list) {
1337                         trans = list_entry(pacer, lstcon_rpc_trans_t,
1338                                                tas_link);
1339
1340                         CDEBUG(D_NET, "Session closed, wakeup transaction %s\n",
1341                                lstcon_rpc_trans_name(trans->tas_opc));
1342
1343                         wake_up(&trans->tas_waitq);
1344                 }
1345
1346                 mutex_unlock(&console_session.ses_mutex);
1347
1348                 CWARN("Session is shutting down, waiting for termination of transactions\n");
1349                 set_current_state(TASK_UNINTERRUPTIBLE);
1350                 schedule_timeout(cfs_time_seconds(1));
1351
1352                 mutex_lock(&console_session.ses_mutex);
1353         }
1354
1355         spin_lock(&console_session.ses_rpc_lock);
1356
1357         lst_wait_until((atomic_read(&console_session.ses_rpc_counter) == 0),
1358                        console_session.ses_rpc_lock,
1359                        "Network is not accessible or target is down, waiting for %d console RPCs to being recycled\n",
1360                        atomic_read(&console_session.ses_rpc_counter));
1361
1362         list_add(&zlist, &console_session.ses_rpc_freelist);
1363         list_del_init(&console_session.ses_rpc_freelist);
1364
1365         spin_unlock(&console_session.ses_rpc_lock);
1366
1367         while (!list_empty(&zlist)) {
1368                 crpc = list_entry(zlist.next, lstcon_rpc_t, crp_link);
1369
1370                 list_del(&crpc->crp_link);
1371                 LIBCFS_FREE(crpc, sizeof(lstcon_rpc_t));
1372         }
1373 }
1374
1375 int
1376 lstcon_rpc_module_init(void)
1377 {
1378         INIT_LIST_HEAD(&console_session.ses_ping_timer.stt_list);
1379         console_session.ses_ping_timer.stt_func = lstcon_rpc_pinger;
1380         console_session.ses_ping_timer.stt_data = &console_session.ses_ping_timer;
1381
1382         console_session.ses_ping = NULL;
1383
1384         spin_lock_init(&console_session.ses_rpc_lock);
1385         atomic_set(&console_session.ses_rpc_counter, 0);
1386         INIT_LIST_HEAD(&console_session.ses_rpc_freelist);
1387
1388         return 0;
1389 }
1390
1391 void
1392 lstcon_rpc_module_fini(void)
1393 {
1394         LASSERT(list_empty(&console_session.ses_rpc_freelist));
1395         LASSERT(atomic_read(&console_session.ses_rpc_counter) == 0);
1396 }